text: /*
  This file is part of Ext JS 4.2
  
  Copyright (c) 2011-2013 Sencha Inc
  
  Contact:  http://www.sencha.com/contact
  
  GNU General Public License Usage
  This file may be used under the terms of the GNU General Public License version 3.0 as
  published by the Free Software Foundation and appearing in the file LICENSE included in the
  packaging of this file.
  
  Please review the following information to ensure the GNU General Public License version 3.0
  requirements will be met: http://www.gnu.org/copyleft/gpl.html.
  
  If you are unsure which license is appropriate for your use, please contact the sales department
  at http://www.sencha.com/contact.
  
  Build date: 2013-03-11 22:33:40 (aed16176e68b5e8aa1433452b12805c0ad913836)
  */
  /**
   * @private
   */
  Ext.define('Ext.chart.axis.Radial', {
  
      /* Begin Definitions */
  
      extend: 'Ext.chart.axis.Numeric',
  
      /* End Definitions */
  
      position: 'radial',
  
      alias: 'axis.radial',
  
      /**
       * @cfg {Number} maximum
       * The maximum value drawn by the axis. If not set explicitly, the axis
       * maximum will be calculated automatically.
       */
  
      /**
       * @cfg {Number} [steps=10]
       * The number of circles to draw outward from the center.
       */
  
      drawAxis: function(init) {
          var chart = this.chart,
              surface = chart.surface,
              bbox = chart.chartBBox,
              store = chart.getChartStore(),
              l = store.getCount(),
              centerX = bbox.x + (bbox.width / 2),
              centerY = bbox.y + (bbox.height / 2),
              rho = Math.min(bbox.width, bbox.height) /2,
              sprites = [], sprite,
              steps = this.steps,
              i, j, pi2 = Math.PI * 2,
              cos = Math.cos, sin = Math.sin;
  
          if (this.sprites && !chart.resizing) {
              this.drawLabel();
              return;
          }
  
          if (!this.sprites) {
              //draw circles
              for (i = 1; i <= steps; i++) {
                  sprite = surface.add({
                      type: 'circle',
                      x: centerX,
                      y: centerY,
                      radius: Math.max(rho * i / steps, 0),
                      stroke: '#ccc'
                  });
                  sprite.setAttributes({
                      hidden: false
                  }, true);
                  sprites.push(sprite);
              }
              //draw lines
              for (i = 0; i < l; i++) {
                  sprite = surface.add({
                      type: 'path',
                      path: ['M', centerX, centerY, 'L', centerX + rho * cos(i / l * pi2), centerY + rho * sin(i / l * pi2), 'Z'],
                      stroke: '#ccc'
                  });
                  sprite.setAttributes({
                      hidden: false
                  }, true);
                  sprites.push(sprite);
              }
          } else {
              sprites = this.sprites;
              //draw circles
              for (i = 0; i < steps; i++) {
                  sprites[i].setAttributes({
                      x: centerX,
                      y: centerY,
                      radius: Math.max(rho * (i + 1) / steps, 0),
                      stroke: '#ccc'
                  }, true);
              }
              //draw lines
              for (j = 0; j < l; j++) {
                  sprites[i + j].setAttributes({
                      path: ['M', centerX, centerY, 'L', centerX + rho * cos(j / l * pi2), centerY + rho * sin(j / l * pi2), 'Z'],
                      stroke: '#ccc'
                  }, true);
              }
          }
          this.sprites = sprites;
  
          this.drawLabel();
      },
  
      drawLabel: function() {
          var chart = this.chart,
              seriesItems = chart.series.items,
              series,
              surface = chart.surface,
              bbox = chart.chartBBox,
              store = chart.getChartStore(),
              data = store.data.items,
              ln, record,
              centerX = bbox.x + (bbox.width / 2),
              centerY = bbox.y + (bbox.height / 2),
              rho = Math.min(bbox.width, bbox.height) /2,
              max = Math.max, round = Math.round,
              labelArray = [], label,
              fields = [], nfields,
              categories = [], xField,
              aggregate = !this.maximum,
              maxValue = this.maximum || 0,
              steps = this.steps, i = 0, j, dx, dy,
              pi2 = Math.PI * 2,
              cos = Math.cos, sin = Math.sin,
              display = this.label.display,
              draw = display !== 'none',
              margin = 10;
  
          if (!draw) {
              return;
          }
  
          //get all rendered fields
          for (i = 0, ln = seriesItems.length; i < ln; i++) {
              series = seriesItems[i];
              fields.push(series.yField);
              xField = series.xField;
          }
          
          //get maxValue to interpolate
          for (j = 0, ln = data.length; j < ln; j++) {
              record = data[j];
              categories.push(record.get(xField));
  
              if (aggregate) {
                  for (i = 0, nfields = fields.length; i < nfields; i++) {
                      maxValue = max(+record.get(fields[i]), maxValue);
                  }
              }
          }
          if (!this.labelArray) {
              if (display != 'categories') {
                  //draw scale
                  for (i = 1; i <= steps; i++) {
                      label = surface.add({
                          type: 'text',
                          text: round(i / steps * maxValue),
                          x: centerX,
                          y: centerY - rho * i / steps,
                          'text-anchor': 'middle',
                          'stroke-width': 0.1,
                          stroke: '#333'
                      });
                      label.setAttributes({
                          hidden: false
                      }, true);
                      labelArray.push(label);
                  }
              }
              if (display != 'scale') {
                  //draw text
                  for (j = 0, steps = categories.length; j < steps; j++) {
                      dx = cos(j / steps * pi2) * (rho + margin);
                      dy = sin(j / steps * pi2) * (rho + margin);
                      label = surface.add({
                          type: 'text',
                          text: categories[j],
                          x: centerX + dx,
                          y: centerY + dy,
                          'text-anchor': dx * dx <= 0.001? 'middle' : (dx < 0? 'end' : 'start')
                      });
                      label.setAttributes({
                          hidden: false
                      }, true);
                      labelArray.push(label);
                  }
              }
          }
          else {
              labelArray = this.labelArray;
              if (display != 'categories') {
                  //draw values
                  for (i = 0; i < steps; i++) {
                      labelArray[i].setAttributes({
                          text: round((i + 1) / steps * maxValue),
                          x: centerX,
                          y: centerY - rho * (i + 1) / steps,
                          'text-anchor': 'middle',
                          'stroke-width': 0.1,
                          stroke: '#333'
                      }, true);
                  }
              }
              if (display != 'scale') {
                  //draw text
                  for (j = 0, steps = categories.length; j < steps; j++) {
                      dx = cos(j / steps * pi2) * (rho + margin);
                      dy = sin(j / steps * pi2) * (rho + margin);
                      if (labelArray[i + j]) {
                          labelArray[i + j].setAttributes({
                              type: 'text',
                              text: categories[j],
                              x: centerX + dx,
                              y: centerY + dy,
                              'text-anchor': dx * dx <= 0.001? 'middle' : (dx < 0? 'end' : 'start')
                          }, true);
                      }
                  }
              }
          }
          this.labelArray = labelArray;
      },
  
      getRange: function () {
          var range = this.callParent();
          range.min = 0;  // Radial charts currently assume that the origin is always 0.
          return range;
      },
  
      processView: function() {
          var me = this,
              seriesItems = me.chart.series.items,
              i, ln, series, ends, fields = [];
  
          for (i = 0, ln = seriesItems.length; i < ln; i++) {
              series = seriesItems[i];
              fields.push(series.yField);
          }
          me.fields = fields;
  
          ends = me.calcEnds();
          me.maximum = ends.to;
          me.steps = ends.steps;
      }
  });